Hadronic Decays of Charmed Hadrons at BESIII

Charmed Hadrons from Fragmentation and B Decays

Hadronic Charmed Meson Decays Involving Tensor Mesons

Charmed meson decays into a pseudoscalar meson P and a tensor meson T are studied. The charm to tensor meson transition form factors are evaluated in the Isgur-Scora-Grinstein-Wise (ISGW) quark model. It is shown that the Cabibbo-allowed decay D+ s → f2(1270)π is dominated by the W -annihilation contribution and has the largest branching ratio in D → TP decays. We argue that the Cabibbo-suppres...

Hadronic Charmed Meson Decays Involving Axial Vector Mesons

Cabibbo-allowed charmed meson decays into a pseudoscalar meson and an axial-vector meson are studied. The charm to axial-vector meson transition form factors are evaluated in the Isgur-Scora-Grinstein-Wise quark model. The dipole momentum dependence of the D → K transition form factor and the presence of a sizable long-distance W -exchange are the two key ingredients for understanding the data ...

Hadronic B Decays Involving Even Parity Charmed Mesons

Hadronic B decays containing an even-parity charmed meson in the final state are studied. Specifically we focus on the Cabibbo-allowed decays B → D∗∗π(ρ), D∗∗D̄ s , D̄∗∗ s D(∗) and Bs → D∗∗ s π(ρ), where D∗∗ denotes generically a p-wave charmed meson. The B → D∗∗ transition form factors are studied in the improved version of the Isgur-Scora-Grinstein-Wise quark model. We apply heavy quark effecti...

Lifetime of charmed Hadrons Revisited

The problem of the hierarchy of lifetimes of charmed hadrons is reviewed. The QCD-based theory of preasymptotic effects in inclusive weak decays dating back to the beginning of the eighties is now entering its mature phase. Combining recent and old results we argue that the observed hierarchy reflects most intimate features of the hadronic structure. The problem of a wide spread of lifetimes of...